<template>
  <view>
    <view class="goods-item">
       <!-- 左侧 -->
       <view class="goods-item-left">
         <radio :checked="goods.goods_state" color="#C00000" v-if="showradio" @click="radioClickHandler"></radio>
         <image :src="goods.goods_small_logo || defaultPic" class="goods-pic"></image>
       </view>
       <!-- 右侧 -->
       <view class="goods-item-right">
          <!-- 商品标题 -->
          <view class="goods-name">{{goods.goods_name}}</view>
          <view class="goods-info-box">
        <!-- 商品价格 -->
          <view class="goods-price">￥{{goods.goods_price | tofixed}}</view>
           <!-- 商品数量 -->
            <uni-number-box :min="1" :value="goods.goods_count"  v-if="showNum"  @change="numChangeHandler"></uni-number-box>
         </view>
       </view>
    </view>
  </view>
</template>

<script>
  export default {
    props:{
      goods:{
        type:Object,
        default:{}
      },
      showradio:{
        type:Boolean,
        default:false
      },
       // 是否展示价格右侧的 NumberBox 组件
          showNum: {
            type: Boolean,
            default: false,
          },
    },
    data() {
      return {
        // 默认的空图片
           defaultPic: 'https://img3.doubanio.com/f/movie/8dd0c794499fe925ae2ae89ee30cd225750457b4/pics/movie/celebrity-default-medium.png'
      };
    },
    filters:{
      tofixed(num){
        return Number(num).toFixed(2)
      }
    },
  methods:{
    // 这是radio组件的点击事件处理函数
    radioClickHandler(){
      this.$emit('radio-change',{
        goods_id:this.goods.goods_id,
        goods_state:!this.goods.goods_state,
      })
      // console.log(this.goods.goods_state);
    },
      // NumberBox 组件的 change 事件处理函数
      numChangeHandler(val) {
        // console.log(val);
        // 通过 this.$emit() 触发外界通过 @ 绑定的 num-change 事件
        this.$emit('num-change', {
          // 商品的 Id
          goods_id: this.goods.goods_id,
          // 商品的最新数量 +val保证最终数值为数字
          goods_count: +val
        })
      }
  }
  }
</script>

<style lang="scss">
.goods-item {
   // 让 goods-item 项占满整个屏幕的宽度
    width: 750rpx;
    // 设置盒模型为 border-box
    box-sizing: border-box;
    display: flex;
    padding: 10px 5px;
    border-bottom: 1px solid #f0f0f0;
.goods-item-left {
  margin-right: 5px;
  display: flex;
  justify-content: space-between;
  align-items: center;

  .goods-pic {
    width: 100px;
    height: 100px;
    display: block;
  }
}

  .goods-item-right {
    display: flex;
    flex-direction: column;
    justify-content: space-between;

    .goods-name {
      font-size: 13px;
    }
  .goods-info-box {
    display: flex;
    align-items: center;
    justify-content: space-between;
  }
    .goods-price {
      font-size: 16px;
      color: #c00000;
    }
  }
}
</style>